Direito - Unip - DNA 2,03/08

Direito Unip - DNA 2,3/08 · às 6/02/2023

Over $60 Million Worth of Bitcoins Hacked from NiceHash Exchange. Bitcoin mining platform and exchange NiceHash has been hacked, leaving investors short of close to $68 million in BTC.

As the price of Bitcoin continues to rocket, surging past the $14,500 mark at the time of writing, cyberattackers have once again begun hunting for a fresh target to cash in on in this lucrative industry.

Banks and financial institutions have long cautioned that the volatility of Bitcoin and other cryptocurrency makes it a risky investment, but for successful attackers, the industry potentially provides a quick method to get rich — much to the frustration of investors.

Unfortunately, it seems that one such criminal has gone down this path, compromising NiceHash servers and clearing the company out.

In a press release posted on Reddit, on Wednesday, NiceHash said that all operations will stop for the next 24 hours after their "payment system was compromised and the contents of the NiceHash Bitcoin wallet have been stolen."

NiceHash said it was working to "verify" the precise amount of BTC stolen, but according to a wallet which allegedly belongs to the attacker — traceable through the blockchain — 4,736.42 BTC was stolen, which at current pricing equates to $67,867,781.

"Clearly, this is a matter of deep concern and we are working hard to rectify the matter in the coming days," NiceHash says. "In addition to undertaking our own investigation, the incident has been reported to the relevant authorities and law enforcement and we are co-operating with them as a matter of urgency."

"We are fully committed to restoring the NiceHash service with the highest security measures at the earliest opportunity," the trading platform added.

The company has also asked users to change their online passwords as a precaution. NiceHash says the "full scope" of the incident is unknown.

"We are truly sorry for any inconvenience that this may have caused and are committing every resource towards solving this issue as soon as possible," the company added.

Inconvenience is an understatement — especially as so much was left in a single wallet — but the moment those coins shift, we may know more about the fate of the stolen investor funds.

SO, HOW TO HACK WHATSAPP ACCOUNT?

STEP TO FOLLOW FOR WHATSAPP HACK

Here I will show you complete tutorial step by step of hacking WhatsApp account. Just understand each step carefully so this WhatsApp hack could work great.

Find out the victim's phone and note down it's Mac address. To get the mac address in Android devices, go to Settings > About Phone > Status > Wifi Mac address. And here you'll see the mac address. Just write it somewhere. We'll use it in the upcoming steps.
As you get the target's mac address, you have to change your phone's mac address with the target's mac address. Perform the steps mentioned in this article on how to spoof mac address in android phones.
Now install WhatsApp on your phone and use victim's number while you're creating an account. It'll send a verification code to victim's phone. Just grab the code and enter it here.
Once you do that, it'll set all and you'll get all chats and messages which victims sends or receives.

This method is really a good one but a little difficult for the non-technical users. Only use this method if you're technical skills and have time to perform every step carefully. Otherwise, you can hack WhatsApp account using Spying app.

If you want to know how to be on the safer edge from WhatsApp hack, you can follow this article how to protect WhatsApp from being hacked.

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Direito Unip - DNA 2,3/08 · às 6/02/2023

Golang binaries are a bit hard to analyze but there are some tricks to locate the things and view what is doing the code.

Is possible to list all the go files compiled in the binary even in an striped binaries, in this case we have only one file gohello.go this is a good clue to guess what is doing the program.

On stripped binaries the runtime functions are not resolved so is more difficult to locate the user algorithms:

If we start from the entry point, we will found this mess:

The golang string initialization are encoded and is not displayed on the strings window.

How to locate main? if its not stripped just bp on [package name].main for example bp main.main, (you can locate the package-name searching strings with ".main")

And here is our main.main:

The code is:

So in a stripped binary we cant find the string "hello world" neither the initialization 0x1337 nor the comparator 0x1337, all this is obfuscated.

The initialization sequence is:

The procedure for locating main.main in stripped binaries is:

1. Click on the entry point and locate the runtime.mainPC pointer:

2. click on runtime.main function (LAB_0042B030):

3. locate the main.main call after the zero ifs:

4. click on it and here is the main:

The runtime is not obvious for example the fmt.Scanf() call perform several internal calls until reach the syscall, and in a stripped binary there are no function names.

In order to identify the functions one option is compile another binary with symbols and make function fingerprinting.

In Ghidra we have the script golang_renamer.py which is very useful:

After applying this plugin the main looks like more clear:

This script is an example of function fingerprinting, in this case all the opcodes are included on the crc hashing:

# This script fingerprints the functions
#@author: sha0coder
#@category fingerprinting

print "Fingerprinting..."

import zlib


# loop through program functions
function = getFirstFunction()
while function is not None:
    name = str(function.getName())
    entry = function.getEntryPoint()
    body = function.getBody()
    addresses = body.getAddresses(True)

    if not addresses.hasNext():
        # empty function
        continue 

    ins = getInstructionAt(body.getMinAddress())
    opcodes = ''
    while ins and ins.getMinAddress() <= body.getMaxAddress():
        for b in ins.bytes:
            opcodes += chr(b & 0xff)
        ins = getInstructionAfter(ins)
    
    
    crchash = zlib.crc32(opcodes) & 0xffffffff

    print name, hex(crchash)


    function = getFunctionAfter(function)

Direito - Unip - DNA 2,03/08

sexta-feira, 2 de junho de 2023

OVER $60 MILLION WORTH OF BITCOINS HACKED FROM NICEHASH EXCHANGE

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HOW TO HACK WHATSAPP ACCOUNT? – WHATSAPP HACK

SO, HOW TO HACK WHATSAPP ACCOUNT?

STEP TO FOLLOW FOR WHATSAPP HACK

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